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bf54587a C |
1 | /* eslint-disable @typescript-eslint/array-type */ |
2 | ||
3 | export type FunctionPropertyNames<T> = { | |
4 | [K in keyof T]: T[K] extends Function ? K : never | |
5 | }[keyof T] | |
6 | ||
7 | export type FunctionProperties<T> = Pick<T, FunctionPropertyNames<T>> | |
8 | ||
9 | export type AttributesOnly<T> = { | |
10 | [K in keyof T]: T[K] extends Function ? never : T[K] | |
11 | } | |
12 | ||
13 | export type PickWith<T, KT extends keyof T, V> = { | |
14 | [P in KT]: T[P] extends V ? V : never | |
15 | } | |
16 | ||
17 | export type PickWithOpt<T, KT extends keyof T, V> = { | |
18 | [P in KT]?: T[P] extends V ? V : never | |
19 | } | |
20 | ||
21 | // https://github.com/krzkaczor/ts-essentials Rocks! | |
22 | export type DeepPartial<T> = { | |
23 | [P in keyof T]?: T[P] extends Array<infer U> | |
24 | ? Array<DeepPartial<U>> | |
25 | : T[P] extends ReadonlyArray<infer U> | |
26 | ? ReadonlyArray<DeepPartial<U>> | |
27 | : DeepPartial<T[P]> | |
28 | } | |
29 | ||
e65ef81c | 30 | type Primitive = string | Function | number | boolean | symbol | undefined | null |
bf54587a C |
31 | export type DeepOmitHelper<T, K extends keyof T> = { |
32 | [P in K]: // extra level of indirection needed to trigger homomorhic behavior | |
33 | T[P] extends infer TP // distribute over unions | |
34 | ? TP extends Primitive | |
35 | ? TP // leave primitives and functions alone | |
36 | : TP extends any[] | |
37 | ? DeepOmitArray<TP, K> // Array special handling | |
38 | : DeepOmit<TP, K> | |
39 | : never | |
40 | } | |
41 | export type DeepOmit<T, K> = T extends Primitive ? T : DeepOmitHelper<T, Exclude<keyof T, K>> | |
42 | ||
43 | export type DeepOmitArray<T extends any[], K> = { | |
44 | [P in keyof T]: DeepOmit<T[P], K> | |
45 | } |